//
// Copyright © 2022 Hardcore Engineering Inc.
//
// Licensed under the Eclipse Public License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License. You may
// obtain a copy of the License at https://www.eclipse.org/legal/epl-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
//
// See the License for the specific language governing permissions and
// limitations under the License.
//

import core, { Doc, Tx, TxCUD, TxCreateDoc, TxProcessor, TxUpdateDoc } from '@hcengineering/core'
import { TriggerControl } from '@hcengineering/server-core'
import task, { Task } from '@hcengineering/task'

/**
 * @public
 */
export async function OnStateUpdate (tx: Tx, control: TriggerControl): Promise<Tx[]> {
  const actualTx = TxProcessor.extractTx(tx) as TxCUD<Doc>
  if (!control.hierarchy.isDerived(actualTx.objectClass, task.class.Task)) return []
  if (actualTx._class === core.class.TxCreateDoc) {
    const doc = TxProcessor.createDoc2Doc(actualTx as TxCreateDoc<Task>)
    const status = (await control.findAll(core.class.Status, { _id: doc.status }))[0]
    if (status?.category === task.statusCategory.Lost || status?.category === task.statusCategory.Won) {
      return [control.txFactory.createTxUpdateDoc(doc._class, doc.space, doc._id, { isDone: true })]
    }
  } else if (actualTx._class === core.class.TxUpdateDoc) {
    const updateTx = actualTx as TxUpdateDoc<Task>
    if (updateTx.operations.status !== undefined) {
      const status = (await control.findAll(core.class.Status, { _id: updateTx.operations.status }))[0]
      if (status?.category === task.statusCategory.Lost || status?.category === task.statusCategory.Won) {
        return [
          control.txFactory.createTxUpdateDoc(updateTx.objectClass, updateTx.objectSpace, updateTx.objectId, {
            isDone: true
          })
        ]
      } else {
        return [
          control.txFactory.createTxUpdateDoc(updateTx.objectClass, updateTx.objectSpace, updateTx.objectId, {
            isDone: false
          })
        ]
      }
    }
  }
  return []
}

// eslint-disable-next-line @typescript-eslint/explicit-function-return-type
export default async () => ({
  function: {},
  trigger: {
    OnStateUpdate
  }
})
